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  • ASTM
    D5672-03 Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique
    Edition: 2003
    $82.37
    Unlimited Users per year

Description of ASTM-D5672 2003

ASTM D5672-03

Historical Standard: ASTM D5672-03 Standard Test Method for Testing Flexible Cellular Materials Measurement of Indentation Force Deflection Using a 25-mm (1-in.) Deflection Technique

SUPERSEDED (see Active link, below)




ASTM D5672

1. Scope

1.1 This test method covers a screening type quality control test used to determine if flexible polyurethane foam cushions are within the specified grade range for firmness.

1.2 This test method is limited to foams with thicknesses that are 75 mm [3 in.] or greater.

1.3 This test method is based on the fact that the traditional industry standard thickness for Indentation Force Deflection (IFD) is 100 mm [4 in.], and the traditional percent deflection for IFD acceptance and product planning is 25 %. With respect then to these traditional industry conventions, a 25 % deflection on a 100-mm [4-in.] cushion would be 25 mm [1 in.]. Thus, deflecting proper thickness cushions 25 mm [1 in.] will determine if the flexible polyurethane foam is within the specified grade range for 25 % IFD.

1.4 Cushion thicknesses less than 75 mm [3 in.] shall not be tested for IFD using this test method.

1.5 This test method is intended to provide a quick and simple method to screen flexible polyurethane foams for determination of its firmness grade.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Note 1ISO 2439 is a similar test, but there are technical differences.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D3574 Test Methods for Flexible Cellular Materials--Slab, Bonded, and Molded Urethane Foams

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ISO Standard

ISO2439 Flexible Cellular Polymeric Materials--Determination of Hardness (Indentation Technique)

Keywords

flexible cellular; foam hardness ; indentation test; polyurethane; Flexible cellular materials; Foam hardness; Hardness (indentation)--plastics; Indentation force deflection (IFD) ;


ICS Code

ICS Number Code 83.100 (Cellular materials)


DOI: 10.1520/D5672-03

ASTM International is a member of CrossRef.


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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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